EP4466923A4 - Methods and apparatus of csi reporting for coherent joint transmission - Google Patents

Methods and apparatus of csi reporting for coherent joint transmission

Info

Publication number
EP4466923A4
EP4466923A4 EP22939216.2A EP22939216A EP4466923A4 EP 4466923 A4 EP4466923 A4 EP 4466923A4 EP 22939216 A EP22939216 A EP 22939216A EP 4466923 A4 EP4466923 A4 EP 4466923A4
Authority
EP
European Patent Office
Prior art keywords
methods
csi reporting
joint transmission
coherent joint
coherent
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP22939216.2A
Other languages
German (de)
French (fr)
Other versions
EP4466923A1 (en
Inventor
Yi Zhang
Chenxi Zhu
Wei Ling
Bingchao Liu
Lingling Xiao
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lenovo Beijing Ltd
Original Assignee
Lenovo Beijing Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lenovo Beijing Ltd filed Critical Lenovo Beijing Ltd
Publication of EP4466923A1 publication Critical patent/EP4466923A1/en
Publication of EP4466923A4 publication Critical patent/EP4466923A4/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/022—Site diversity; Macro-diversity
    • H04B7/024—Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H04B7/0417—Feedback systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H04B7/0456—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0621—Feedback content
    • H04B7/063—Parameters other than those covered in groups H04B7/0623 - H04B7/0634, e.g. channel matrix rank or transmit mode selection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0636—Feedback format
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0636—Feedback format
    • H04B7/0639—Using selective indices, e.g. of a codebook, e.g. pre-distortion matrix index [PMI] or for beam selection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H04B7/0452—Multi-user MIMO systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0621—Feedback content
    • H04B7/0626—Channel coefficients, e.g. channel state information [CSI]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0621—Feedback content
    • H04B7/0632—Channel quality parameters, e.g. channel quality indicator [CQI]

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
EP22939216.2A 2022-04-29 2022-04-29 Methods and apparatus of csi reporting for coherent joint transmission Pending EP4466923A4 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2022/090296 WO2023206367A1 (en) 2022-04-29 2022-04-29 Methods and apparatus of csi reporting for coherent joint transmission

Publications (2)

Publication Number Publication Date
EP4466923A1 EP4466923A1 (en) 2024-11-27
EP4466923A4 true EP4466923A4 (en) 2025-07-30

Family

ID=88516905

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22939216.2A Pending EP4466923A4 (en) 2022-04-29 2022-04-29 Methods and apparatus of csi reporting for coherent joint transmission

Country Status (5)

Country Link
US (1) US20250202545A1 (en)
EP (1) EP4466923A4 (en)
CN (1) CN118743297A (en)
GB (1) GB2630520A (en)
WO (1) WO2023206367A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20240284220A1 (en) * 2023-01-20 2024-08-22 Samsung Electronics Co., Ltd. Csi reporting for multi-trp coherent joint-transmission
US20250175226A1 (en) * 2023-11-24 2025-05-29 Mediatek Inc. Apparatuses and methods for improving the acquisition of channel state information report
WO2025173974A1 (en) * 2024-02-14 2025-08-21 엘지전자 주식회사 Method performed by terminal or network in wireless communication system and device therefor
WO2026073480A1 (en) * 2025-06-06 2026-04-09 Lenovo (Beijing) Limited Methods and apparatuses for csi-rs transmission

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150215090A1 (en) * 2012-06-18 2015-07-30 Samsung Electronics Co., Ltd. Aperiodic and periodic csi feedback modes for coordinated multi-point transmission
WO2022073154A1 (en) * 2020-10-06 2022-04-14 Qualcomm Incorporated Techniques for joint channel state information reporting for multiple transmission and reception point communication schemes

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109391404B (en) * 2017-08-10 2021-02-09 电信科学技术研究院有限公司 CSI feedback and control method and device thereof
CN115735376A (en) * 2020-04-30 2023-03-03 株式会社Ntt都科摩 Terminal, wireless communication method, and base station
WO2022032259A1 (en) * 2020-08-07 2022-02-10 Intel Corporation Csi reporting for non-coherent joint transmission (ncjt)

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150215090A1 (en) * 2012-06-18 2015-07-30 Samsung Electronics Co., Ltd. Aperiodic and periodic csi feedback modes for coordinated multi-point transmission
WO2022073154A1 (en) * 2020-10-06 2022-04-14 Qualcomm Incorporated Techniques for joint channel state information reporting for multiple transmission and reception point communication schemes

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
HUAWEI ET AL: "Summary of CSI enhancements for MTRP and FDD (Round 0)", vol. RAN WG1, no. e-Meeting; 20210510 - 20210527, 20 May 2021 (2021-05-20), XP052012830, Retrieved from the Internet <URL:https://ftp.3gpp.org/tsg_ran/WG1_RL1/TSGR1_105-e/Inbox/R1-2106070.zip R1-2106070 Summary of CSI enhancements for MTRP and FDD (Round 0)_V30_SS_CATT.docx> [retrieved on 20210520] *
See also references of WO2023206367A1 *
ZTE: "CSI enhancements for Multi-TRP and FR1 FDD reciprocity", vol. RAN WG1, no. e-Meeting; 20211011 - 20211019, 1 October 2021 (2021-10-01), XP052057752, Retrieved from the Internet <URL:https://ftp.3gpp.org/tsg_ran/WG1_RL1/TSGR1_106b-e/Docs/R1-2108876.zip R1-2108876 CSI enhancements for Multi-TRP and FR1 FDD reciprocity.docx> [retrieved on 20211001] *

Also Published As

Publication number Publication date
EP4466923A1 (en) 2024-11-27
CN118743297A (en) 2024-10-01
US20250202545A1 (en) 2025-06-19
WO2023206367A1 (en) 2023-11-02
GB2630520A (en) 2024-11-27

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